420 Day

Jump to International day for cannabis-related protests and events - 420, 4:20, or 4/20 (pronounced four-twenty) is a code-term in cannabis culture that refers to the consumption of cannabis, especially smoking cannabis around the time 4:20 p.m./a.m. (or 16:20 in 24-hour notation) and smoking and celebrating cannabis on the date April 20 (which is 4/20 in U.S. form).